دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n pi: see power wrench.

n: the tongs that drived by power, which makes up and breakouts pipe, oil tube and casing.


hydraulic power make up tools suspended above the rig floor.

n: a wrench that is used to make up or break out drill pipe, tubing, or casing on which the torque is provided by air or fluid pressure. Conventional tongs are operated by mechanical pull provided by a jerk line connected to a cathead.

n pi: the large wrenches used for turning when making up or breaking out drill pipe, casing, tubing, or other pipe;variously called casing tongs, pipe tongs, and so forth, according to the specific use. Power tongs or power wrenches are pneumatically or hydraulically operated tools that serve to spin the pipe up tight and, in some instances, to apply the final makeup torque.

a wrench, hand or power, suspended above the rig floor to make or break pipe connections.